| Abbreviation | Definition |
|---|---|
| DEED | Demonstration of Energy Efficient Development |
| DEED | Education and Early Development |
| DEH | Development and Empowerment for Humanity |
| DEKA | Dean Kamen (of DEKA Research and Development Corporation, Manchester, NH, USA) |
| DEMBA | A truly inspirational man that is limitless and has no boundaries for self development. |
| DEMD | Division of Energy and Mineral Development |
| DEMPE | Development Enhancement Maintenance Protection and Exploitation |
| DEMPE | Development Enhancement Maintenance Protection Exploitation |
| DEO | Development Effectiveness Overview |
| DEOD | Division of Equal Opportunity Development |
| DEPAC | Sierra Leone Development Partnership Committee |
| DEPD | Department of Economic Planning and Development |
| DEPD | Department of Education for Peace Development |
| DEPT | Development Elite Private Training |
| DEPT | Development Elite Professional Training |
| DER | Development Executives Roundtable |
| DERC | Development Education Research Centre |
| DERD | Department of Ecumenical Relations and Development |
| DERD | Development Environmental Regulations Division |
| DERG | Development Economics Research Group |